import java.io.File;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: qian
 * Date: 2023-02-10
 * Time: 16:35
 */
public class test4 {
    public static void main(String[] args) {
        //File f=new File("./testDir");
        File f=new File("./testDir/aaa/bbb");
        //创建单层目录
        //f.mkdir();
        //创建多级目录
        f.mkdirs();

    }
}
